给DataGridView加上行号吧[C#、WinForm]

在显示很多记录时，给DataGridView加上行号会提高用户体验。注意在dataGridView的RowPostPaint事件中实现：

///给DataGridView加上行号 private void dataGridView1_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e) { Rectangle rectangle = new Rectangle(e.RowBounds.Location.X, e.RowBounds.Location.Y, dataGridView1.RowHeadersWidth - 4, e.RowBounds.Height); TextRenderer.DrawText(e.Graphics, (e.RowIndex + 1).ToString(), dataGridView1.RowHeadersDefaultCellStyle.Font, rectangle, dataGridView1.RowHeadersDefaultCellStyle.ForeColor, TextFormatFlags.VerticalCenter | TextFormatFlags.Right); }